Provided by: systemtap-doc_2.3-1ubuntu1.4_all 

NAME
function::mdelay - millisecond delay
SYNOPSIS
mdelay(ms:long)
ARGUMENTS
ms
Number of milliseconds to delay.
DESCRIPTION
This function inserts a multi-millisecond busy-delay into a probe handler. It requires guru mode.
SystemTap Tapset Reference March 2016 FUNCTION::MDELAY(3stap)